>1is7_O mol:protein length:84 GTP Cyclohydrolase I Feedback Regulatory ProteinMPYLLISTQIRMEVGPTMVGDEHSDPELMQQLGASKRRVLGNNFYEYYVNDPPRIVLDKLECRGFRVLSMTGVGQTLVWCLHKE